It seems that the solution to the problem has been found, and the key to leaving the fourth-floor gate is indeed these inconspicuous tiny fireworks!

However, although Lu Qingyu extinguished three fireworks in a row, and the stone platform also produced gratifying changes very cooperatively, the total number of fireworks jumping up on the stone platform did not decrease, and it was still gushing out of those holes, as if it would never be broken.

Moreover, once Lu Qingyu stops extinguishing the fireworks, this stone platform will stagnate, and there is even a clear tendency to sink slowly, although the sinking speed is very slow and vague, but it really exists.

In other words, if you want to make this stone platform rise into the air, you must keep extinguishing the flames, and there must be no pause, otherwise you can only advance a hundred steps and retreat fifty, and the efficiency will be extremely low.

After thinking about this, Lu Qingyu's eyes suddenly lit up, and then he crouched on the ground and carefully counted the number of holes on the stone platform.

No more, no less, nine, nine holes in total!

Lu Qingyu stood up, and a confident smile suddenly appeared on his face, and it seemed that he had completely understood the principle of the stone platform rising.

As expected, these four layers are no longer just about the way of elemental materialization, but also about the skill of energy manipulation.

To put it bluntly, the passers must simultaneously and uninterruptedly extinguish the fireworks that shoot out from the nine holes in the stone platform, and keep it until the stone platform rises to the highest point!

Of course, at present, Lu Qingyu doesn't know if anything bad will happen if he can't do this, and he doesn't know where the highest point of the stone platform is, but judging from the experience of the previous three layers, the designers here will definitely not let the interlocutors move forward smoothly and steadily, otherwise the difficulty of these four layers will be too small.

In other words, if you want to pass through the fourth layer of this trial, this continuous slashing of nine flames is a dead task that must be completed, and of course, it may only be the beginning of the entire mission.

Anyway, figuring out the way to understand the problem, Lu Qingyu got out of his confused mood, and his body was suddenly full of fighting spirit.

It's just a few slashing nine flames in a row, this kind of delicate work is what Lu Qingyu is good at, who made him a guy who has comprehended the subtle realm!

Walking to the center of the stone platform, Lu Qingyu began to observe the law of fireworks spraying on the stone platform, although the nine holes are really not a lot for Lu Qingyu, even if it is an immediate shot, there will not be much deviation, but sharpening the knife is not a mistake to chop wood, Lu Qingyu would rather be careful, be safe, and strive to be the best and most perfect, rather than shoot at will.

There are crises every step of the way in the land of trials, and no one knows what the consequences will be if this stone platform cannot be perfectly controlled.

It only took less than a minute for Lu Qingyu to have a general understanding of the spraying law between the nine holes, and then he was ready to make a move.

The reason why it is a general understanding rather than a complete understanding is that the frequency and trajectory of these fireworks are not immutable, and there are often unexpected variables outside of the fixed rules, which makes the rarity of the fireworks become a little greater.

"Whew!" Lu Qingyu breathed lightly, his shoulders first relaxed completely, and then crossed his hands in front of his chest, and after a few breaths of calm, a trace of red light lit up in the hole on the far left side of the stone platform, and Lu Qingyu began to tighten from his shoulders to his elbows to his palms almost at the same time.

Then, Lu Qingyu's hands danced quickly and concisely like butterflies piercing flowers, and powerful and delicate power suddenly sprayed out from Lu Qingyu's body, forming a beautiful and colorful net of ethereal spirit blades in front of Lu Qingyu's body.

The net was not neat or irregular, but it was just enough to cover the fireworks that erupted from the nine holes on the stone platform.

The first flame was extinguished at the peak of the high leap, and at this time, the ninth flame had just broken out of the hole, but it was also instantly cut into nothingness.

The time for the fireworks to erupt from the nine holes was both before and after, and the trajectories were also very different, but there was no possibility of escape at all in front of the blade net woven by Lu Qingyu, just a photo, and all of them were cut into flying ashes.

As the nine fireworks were extinguished, the stone platform under Lu Qingyu's feet suddenly began to rise upward, and the speed of the level was very fast and rhythmic, and the stone platform was like an elevator controlled by someone.

However, the environment in which this "elevator" operates is really not acceptable to ordinary people, just the fact that it is helplessly suspended above the endless abyss can make many people's legs weak, coupled with the cold atmosphere around them, and the nervous state of being in an unknown place, these various factors are enough to discourage the vast majority of people.

Of course, Lu Qingyu was definitely not among the vast majority of people, when the stone platform started as expected, while he kept chopping and intertwining the blade net, he actually had extra energy to carefully observe the subtle changes when the stone platform was rising.

Sure enough, under careful observation, Lu Qingyu soon had a lot of gains.

Although the nine fireworks were extinguished almost at the same time, there was still some extremely small time difference after all, although this time difference was negligible, but the amount of information that could be provided to Lu Qingyu was still very huge.

From the slashing of the first wave of nine fireworks, Lu Qingyu found that the benefits that these nine fireworks could bring him were all different.

The first fireworks, just like when he was experimenting, could only cause some extremely subtle changes in the stone platform, and the height of the climb could only be seen carefully by crouching down and leaning over to look at it.

After the second flame was extinguished, the rise of the stone platform was significantly increased, and it almost had a feeling of being close to half a meter or so.

Then the third firework jumped up another step, soaring directly to a height of about two meters.

By analogy, when Lu Qingyu extinguished the ninth firework, the height of the stone platform had reached more than thirty meters at one time, and after nine slashes, the stone platform was already nearly fifty meters away from the original position.

However, after the ninth flame was extinguished, Lu Qingyu didn't have time to breathe a sigh of relief, and the first hole on the far left side of the stone platform began to spray a second wave of fireworks, so Lu Qingyu had no choice but to wave the Void Spirit Blade Net to start a new round of slashing.

In this way, the nine holes cycled back and forth, constantly spraying this firework, and Lu Qingyu could only stand firmly in the middle of the stone platform, mechanically waving the Void Spirit Blade, as much as possible to ensure that every firework was extinguished in time.